Cory's Shearwaters Bicker

The largest of the Atlantic shearwaters, Cory's Shearwater (Calonectris borealis) can often be spotted by its casual wingbeat and gliding flight. When not breeding on islands in the Mediterranean or off the coast of Spain, they roam the North Atlantic hunting for squid and fish to eat. They can dive more than 50 feet (15 meters) for food, but will often pick small food off of Sargassum floating at the surface, scavenge the kills of dolphins, or just steal from one another, shown here. See photos and read more about seabird migration.